EP1150804A1

EP1150804A1 - Vise-grip or expanding pliers

Info

Publication number: EP1150804A1
Application number: EP00903630A
Authority: EP
Inventors: Zbigniew Noniewicz; Hans-Jürgen Schüller
Original assignee: Wolfcraft GmbH
Current assignee: Wolfcraft GmbH
Priority date: 1999-02-11
Filing date: 2000-01-26
Publication date: 2001-11-07
Anticipated expiration: 2020-01-26
Also published as: CA2327300C; DE50010058D1; EP1236543A2; ATE222839T1; EP1323499A3; CN1327406A; CA2342760A1; WO2000047371A8; DE50000415D1; US6708587B1; EP1236543B1; CA2342760C; AU2544400A; EP1150804B1; EP1150804B8; EP1236543A3; CA2327300A1; ES2179017T3; EP1323499A2; DE20021888U1

Abstract

The pliers have a toothed arc batten (11) fitted to one of the arms (4) of the pliers, in the teeth of which a locking pawl (13) fitted to the handle part of the other arm (6) engages. This pawl and its locking sector (17) are made in two parts. The spacing between the tooth engagement point of the pawl and the teeth and bearing journals can be reduced, causing the two clamping sectors (7, 9) to spring apart.

Description

00001 clamping or spreading pliers

00002

00003 The invention relates to a clamping or spreading

00004 pliers with two like a scissors joint

00005 interconnected pliers arms that have one end

00006 handle sections and other at handle operation

00007 form clamping sections that can be moved towards one another,

00008 with the two gun arms in different spacing

00009 the clamping sections can be locked in the clamping positions

Are 00010. 00011

00012 By catalog Gδdde, 1989, page 531, an assembly

00013 known pliers as they are also used in surgical

00014 finds rich application. The resilience is based on the

00015 resettable deformability of the pliers legs. So

00016 the stalks are quite slim and also

00017 also the relatively long jaws. They are like

00018 practical tweezers arms. The respective clamping position

00019 can be fixed by a releasable locking clamp.

Corresponding tooth-like locking projections are located

00021 between the stalks. The loosening causes a twisting of the

00022 gun arms ahead. This can result in a pincer jaw

00023 record lead. 00024

00025 There are also versions of cable cutters and

00026 branch shears known (US-PS 1 454 917, US-PS 4 062 218,

00027 GB-PS 1 056 176) through which a tooth segment and a

00028 ratchet ratchet are arranged so that the

00029 gun arms remain torsion-free. These solutions

But 00030 rely on expensive gears. 00031

00032 object of the invention is to provide a generic clamping

00033 pliers to keep from twisting forces in the trade,

00034 but still structurally easier to design. 00035 00036 This task is first and foremost

00037 a pair of pliers with the features of claim 1

00038 solved by a dental arch associated with a forceps arm

Ledge, in the teeth one of the handle portion of the

00040 other pawl arm associated pawl engages.

00041 The dental arch can be integrated, which the parts

00042 number reduced. The pawl is simply the other

00043 ren assigned pliers arm. That can be spatial

To carry 00044 close to the trade, so that the trigger too

00045 becomes ergonomically manageable. Should the

00046 pliers are made of plastic, so can in the sense

00047 maximizing the wear resistance

00048 gene strip made of a relatively harder plastic

Hen than the gun arms themselves. Advantageously

00050 the pliers arch strip is in a recess in one

00051 pincer arm. The construction is such that the pliers bow leads

00052 ste by means of the scissors-joint pin with the pliers arm

Is pinned and supported on it. Next is

00054 suggest that the clamping sections of the tong arms end

Wear 00055 tippable jaws. This allows

00056 in both spreading positions a plane parallel on both sides

00057 grasping a plate-shaped object. Continue loading

One contribution of the invention is that one

00059 pliers arm forms an opening through which the

00060 other pliers arm is inserted, this under achievement

00061 ung of the so-called inserted type of joint of the

00062 stuff. This solution is further characterized by

00063 that the pliers arm that is located on the inside

00064 carries the pliers bow bar. Proven to be operational

00065 the solution in that the pawl one in

00066 the actuating section projecting the handle section

00067 det. The actuation distance is advantageously

00068 cut in a window of the handle section. Constructionally

00069 and material saving proves the measure that the

00070 handle section has a U-shaped cross section, 00071 in the cavity of the pawl rotatably.

00072 The handle section itself has a cavity that fits

00073 bearing axis for the pawl. Advantage-

It is then 00074 that the tong arms in spreading direction

00075 tion of the jaws are cushioned. Under approval

00076 the pawl always jumps the pliers into theirs

00077 open position. A measure of even more independent

00078 meaning is also that the pliers

00079 clamping force is greater than that for releasing the locking

00080 jack necessary force. That gives priority

00081 triggering and opening the clamping pliers without this

00082 the pawl arm is gripped

00083 should be. The procedure is then that the pawl

00084 is acted upon by an arm of the spreading spring. The

00085 spreading spring thus has a double function; they fun-

00086 is a pawl spring and a return spring

00087 clamp pliers. The corresponding accessibility to the blocking

00088 jack out is achieved in that an arm of

00089 spreading spring dips through a slot in the dental arch profile 00090. Another feature is that the

00091 spreading spring is a torsion spring, the winding

00092 is tied up by the scissor joint pin. closing

00093 lent it is also proposed that the ends of the clamping

00094 cut bearing eyes in which bearing axes

00095 of a storage pocket of the clamping jaw protrude. The bags

00096 are accessible so that such jaws by means

00097 of an auxiliary tool can be replaced, 00098 for example if certain gripping profiles are required

Are 00099. So the jaws only need to be replaced

00100. Finally, it is also achieved that the clamping

00101 force due to an elastic deformation of the clamping

00102 sections is maintained. It is a powerful

00103 full, lying in the swivel plane of the gun arms

00104 torsion-free clamping voltage. 00105 00106 An advantageous development of the invention

00107 clamping or spreading pliers then consists in that the

00108 pawl and the operating section in two parts

00109 are formed. This allows the activation of one

00110 intermediate function. This is substantiated by the fact that the

00111 distance between tooth engagement point of pawl and

00112 toothing and bearing axis for the rotatable mounting of the

00113 confirmation section by a first actuation of the

00114 actuating section is shortened such that the

00115 two clamping sections from the clamping position in one

00116 ventilation position are disengaged, the tooth

00117 handle remains, which is the case with a second

00118 tion of the actuating section is canceled. The

00119 secondary actuation no longer occurs against the clamping

00120 by force of the tool. The first actuation requires

00121 significantly reduced release force; unlocking falls

00122 "softer". It is provided that the pawl

00123 and the actuating section during the first actuation

00124 swivel and shift. The Ver-

00125 shift is possible according to one of the journal

00126 penetrated longitudinal slot of the pawl. The

00127 further means are characterized by a 00128 assigned to the actuating section, in an angular

00129 shaped slot of the pawl engaging disengaging

00130 tap, which in the assigned to the clamping position

00131 position in a substantially transverse to the connection

00132 line of tooth engagement point and bearing journal run

00133 engages the first slot section and which extension

00134 tap back in the assigned to the ventilation position

00135 position in a substantially parallel to the connection

00136 second slit section extending

00137 occurs. The knee-like control system achieved in this way

00138 works under forced control: first disengagement, then

00139 parallel displacement of the release pin in the latter

00140 th, i.e. second slot section. The runs 00141 second slot section in the same direction as the longitudinal

00142 slot. Pawl and operating section are from

00143 acted upon the same arm of the spreading spring. It works

00144 to prevent tampering with the ratchet mechanism.

00145

The object of the invention is based below

00147 two illustrated exemplary embodiments

00148 games explained. It shows:

00149

00150 Fig. 1 the clamping pliers in a perspective view

00151 lung, with open jaws, according to

00152 first embodiment,

00153

00154 Fig. 2 this position of the clamp in side view,

00155

3 shows the section along line III-III in FIG. 2,

00157

4 shows the section along line IV-IV in FIG. 2,

00159

00160 Fig. 5 the clamp in side view, but at

00161 closed mouth,

00162

00163 Fig. 6 is a side view against the right side of the

00164 Figure 5,

00165

00166 Fig. 7 is a partially broken side view

00167 against the left side of FIG. 5,

00168

00169 FIG. 8 shows a representation corresponding to FIG. 2,

00170, however, when the commercial area and

00171 pawl area,

00172

00173 Fig. 9 the clamp in side view, with closed

00174 its mouth, according to the second embodiment

00175 game, 00176 Fig. 10 is a side view against the right side of the

00177 Fig. 9, 00178

00179 Fig. 11 is a side view against the left side of the

00180 Fig. 9, 00181

00182, FIG. 12, the clamping pliers gripping an object,

00183 in side view, 00184

00185 FIG. 13 the clamping pliers in a ventilation position,

00186

00187 FIG. 14 the clamping pliers in the spread-open position,

00188

00189 FIG. 15 the opened commercial area of the clamping tongs

00190 ge in position according to Fig. 12, 00191

00192 FIG. 16 shows the opened commercial area of the clamping tongs

00193 ge in a position introducing the ventilation

00194 preposition, 00195

00196 Fig. 17 the broken-up commercial area in position

00197 according to FIGS. 13 and 00198

00199 FIG. 18 the broken-open commercial area of the clamping tongs

00200 ge in position according to FIG. 14. 00201

00202 The clamp 1 shown is a scissors-type joint

00203 created, but with the formation of a so-called

00204 inserted joint. 00205

00206 With forming a scissors-hinge pin 2. The

00207 penetrates congruently lying eyes 3 in the intersection

00208 range of two tong arms 4.5. The one labeled 4

00209 pliers arm is the inside, i.e. penetrating. 00210 00211 The gun arms 4.5 are made of plastic. They are in

00212 generated material-saving cross-sectional shape, so

00213 pulls hollowed mouth and bilateral opening. 00214

00215 The pliers arm 4 forms a

00216 the grip section 6 and has a grasping one

00217 object causing clamping section 7. The same

00218 the gripper arm 5 has a corresponding

00219 handle section 8 and a clamping section 9. In the area

00220 of the trade G which together in the manner of a scissor joint

00221 other connected gun arms 4,5 finds a direction

00222 offset sections 6-9 instead, so that the

00223 pliers arms 4.5 practically a Z-shaped plan

Train 00224. This leads to a significant widening

00225 between the changing parts of the gun arms 4,5. 00226

00227 The forceps arms 4,5 are locked in a clamping position

00228 bar. This affects both the maximum closed position

00229 of the jaws 10 of the clamp 1 as well as intermediate

00230 positions up to the maximum defined

00231 spread position of the jaw-side clamping sections 7.9.

00232 A dental arch is used for this purpose

00233 bar 11. Their teeth 12 is sawtooth-like. The

00234 arc goes around a radius R, the radius point of which

00235 geometric axis of the scissors-pivot pin 2 represents. 00236

00237 The dental arch strip 11 is the one pliers arm 4

00238 orders. It can be integrally formed. Is preferred

00239, however, proceeded in such a way that the dental arch strip 11

00240 is made of a harder plastic than that of the pliers

00241 arms 4.5. In such a case, the multi-part

00242 structure given preference. 00243

00244 With the toothing 12, a pawl 13 acts together -

00245 men. That is in the region of the grip section 8 of the 00246 penetrated arm 5 protected, but still

00247 conveniently accessible for operation. The blocking

00248 pawl 13 has the corresponding counter toothing 14

00249 on. Both the steep flank of the toothing 12 and

00250 that of the counter toothing 14 is on the radius point of the

00251 scissors-pivot pin 2 directed. The respective tooth

00252 spine shows the saw-

00253 bevel typical of teeth. 00254

00255 As can be seen in the drawing, the

00256 pliers arch strip 11 in a recess close to the trade

00257 15 of the pliers arm 4. The segment-promoting

00258 ige groin is of such an outline that her bondage

00259 due to the scissor joint pin 2 which is present anyway

00260 can be effected, which thus

00261 ste 11 pinned to the pincer arm 4. The pincer bow

00262 bar 11 is congruent with the eye 3

00263 lying eye on. The recess 15 is wider

00264 of such a contour that the segment-shaped pliers arch

00265 bar 11 also on both sides of the rotary plane of the

00266 scissors joint is supported. She is literally

00267 pocketed. The whole is still occupied by broadside

00268 wall sections of the gripping pliers arm 4

00269 and still by those of the gun arm 5, the for

00270 inserting the pliers arm 4 serving the opening

00271 reference numeral 16 carries. 00272

00273 As can be seen in Figure 2, the pawl 13 is on

00274 commercial end of the handle section 8 placed so

00275 that an actuating section 17 is accessible from the outside

00276 lent out laterally. It is as it were

00277 a push button. It lies in the area of a trough 18.

00278 The latter lies on the outside of the handle section 8

00279 and acts as a tactile destination for the 00280 Exercise. The whole thing lies in the clamping handle

00281 area of the hand, and so easily accessible.

00282

00283 The pawl 13 forms with the addition of the actuator

00284 supply section 17 a double lever, pivotally loaded

00285 device about an axis 19 inside the hollow handle

00286 section 8. The axis 19 lies behind on the gusset side

00287 a window 20 of said handle section 8.

00288 The latter is in the U-web of the cross section

00289 U-shaped, leaving a cavity 21

00290 handle section 8. The pawl 13 takes place on one

00291 lower window section their actuation end stop.

00292 The tilt angle of the pawl-like pawl

00293 13 is matched to the tooth depth. 00294

00295 As can be seen, the pawl 13 is doubly

00296 furry tail. The two tails 22 and 23 point in

00297 towards the end of the handle and leave one between them

00298 storage trough 24. This overlaps as it were bearing eye

00299 dend more than half of the jacket wall of the cylindrical

00300 see physical axis 19. That justifies one

00301 bondage. Other means of security can be omitted. 00302

00303 The tail 23 closer to the trade G comes

00304 another function too. This tail 23 the

00305 pawl 13 is namely from an arm 25 one

00306 spreading spring 26 loaded. The burden goes in the sense

00307 the ratchet engagement of the pawl 13 for toothing

00308 to 12. The other arm 27 which acts as a swivel

00309 of the realized spreading spring 26 loads the

00310 forceps arm 4, more precisely its commercial end

00311 range of the handle section 6. 00312

00313 The spreading spring 26 has a bias and

00314 thus acts on the clamping sections 7, 9 of the collet 1 00315 that the tong arms 4.5 in the spreading direction

00316 jaws 28 are loaded.

00317

00318 The tying of the spreading spring 26 takes place under Nut¬

00319 tion of the winding cavity of the turn 29 of the rotary sheave

00320 kelfeder. The scissors joint penetrates this cavity

00321 tap 2 of trade G.

00322

00323 Because of the spreading spring 26 in terms of

00324 dental arch 11 is a mass, is

00325 dental arch 11 to accommodate the winding 29 and

00326 of the arm extending in the direction of the pawl 13

00327 25 slotted. The slot of the arch bar 11 carries that

00328 reference numeral 30. Also with respect to the tail 23 is

00329 a directionally subsequent slit as

00330 position securing of the arm 25 realized.

00331

00332 The clamping jaws 28 are the clamping sections 7.9

00333 assigned to articulated joints. The corresponding geometri¬

00334's axes extend parallel to the space

00335 Scissors-hinge pin 2. The ends of the can be seen

00336 clamping sections 7.9 bearing eyes 31. In the bearing axis

00337 sen 32 hooked. The eyes are corresponding

00338 Finding slots upstream. About this can be

00339 Comfortably tie up the bearing axles 32 of the clamping jaws 28. The

00340 storage pockets are designed so that access ver¬

00341 remains to attach a release tool, so that

00342 jaws 28 are interchangeable.

00343

00344 The function of the clamp 1 is as follows: Outgoing

00345 from the stroke-limited shown in Figure 2

00346 basic position of the tong arms 4.5 can be their

00347 Reduce mouth 10 while detecting an object. The

00348 is done by gently pressing against each other

00349 of the handle sections 6 and 8 against the action of 00350 spreading spring 26. The opposing flat rope

00351 th of the clamping jaws 28 can be

00352 white plate-shaped object around the bearing axes 32

00353 swinging, move to a rich facility. thereupon

00354 the clamping pressure is exerted. The clamp 1 holds

00355 then fixes itself on the object. The resilience remains

00356 by an elastic deformation of the clamping sections

00357 7.9 maintained. 00358

00359 As can be seen in Figure 7, the clamping surfaces of the

00360 jaws 28 also be profiled. Is shown

00361 a symmetrical square cross-sectional profile

00362 33 in the form of proportionate V-channels, which run across the swivel

00363 level of the pliers arms 4.5. In order to do that anyway

00364 necessary resilience of the tong arms 4,5

00365, is their U-profile cross-section through one of the

00366 U-Grund outgoing longitudinal web 34 reinforced. 00367

00368 If the clamping effect is to be removed, it is sufficient to

00369 with 6 designated grip portion, d. H. in

00370 insert the hand cavity, and with a finger

00371 this pawl 13 alone

Press 00372. It is freaked out. The clamp pliers

00373 1 is spring-actuated in its basic spread position according to

00374 Figure 2 back. The gripping force is greater

00375 as necessary to release the pawl 13

00376 force. 00377

00378 The spreading spring 26 serves both as a return spring

00379 clamping pliers 1 and for loading the pawl 13

00380 in the direction of engagement. 00381

00382 Should the clamp 1 be in a space-saving storage

00383 or packaging position are brought,

00384 only need the handle sections 8,9 against each other 00385 the to be moved. The pawl 13 ratchets

00386 on the toothing 12 of the dental arch 11. It lies

00387 then a self-locking closed position in front

00388 of the manner described above by pressure on the actuator

00389 key 17 can be canceled again.

00390

00391 The actuating section 17 or him

00392 pawl 13 is suitably colored

00393 strikingly discontinued.

00394

00395 The clamping or spreading pliers according to the second embodiment

00396 example (FIGS. 9 ff.) Is one except one

00397 design of the functional parts pawl /

00398 actuating section 13/17 basically the same structure

00399 it. The reference numbers are used analogously to

00400 part without repeated text.

00401

00402 So here are pawl 13 and the actuating section

00403 cut 17 no longer in one piece, but in two parts

00404 trained, this in articulation and displacement technology

00405 assignment.

00406

00407 The operating section which functions as a swivel pushbutton

00408 cut 17 sits on the rotatable bearing of the

00409 axis providing actuating section, further be¬

00410 draws as a journal 19 in the pliers arm 5. Also

00411 from the pawl 13 protruding pawl tail

00412 35 is tied over the journal 19. Said

00413 pawl tail 35 has an opening in

00414 shape of a longitudinal slot 36. The latter enables

00415 a limited displacement of the pawl 13 relative

00416 for tapping. The longitudinal slot 36 extends richly

00417 essentially tangentially, but beabstan¬

00418 det for dental arch bar 11 of the pliers arm 4th

00419 00420 A second bond closer to the pawl 13

00421 of the pawl tail 35 is in the form of a winkel¬

Given 00422 shaped slot 37. This slot 37 is located

00423 between the longitudinal slot 36 and a neck 38 of the

00424 pawl 13. The plate-shaped pawl tail

00425 35 has the required width.

00426

00427 Recognizable is the angular

00428 slot 37 around a heart-shaped opening. She is

00429 rectangular and has a first slot section

00430 37 'on. Roughly speaking, this is on the scissors-joint Zap¬

00431 fen 2 aligned or runs in the tensioned position

00432 clamping pliers 1 across a connecting line x-x zwi¬

00433's tooth engagement point 39 of the pawl 13 and the

00434 journal 19. Its pawl-side flank F

00435 is undercut-like. It is slightly below 90 °

00436 line x-x.

00437

00438 The second slot section 37 * 'extends in the

00439 said position in a substantially parallel to the

00440 called connecting line x-x extending extension

00441 direction.

00442

00443 As a tether to the actuating section 17

00444 serves a release pin 40. The changes under

00445 actuation of the locking device from the first slot

00446 cut 37 'of the angular slot 37 in the

00447 second slot portion 37 '' of the same.

00448

00449 The second slot section 37 '* extends richly

00450 identical to the longitudinal slot 36. Both are of the same

00451 cher length. The axial length of the release pin 40

00452 corresponds essentially to the thickness of the same

00453 plate-shaped actuating section 17. For entry

00454 of the ends of the release pin 40, the actuation 00455 cut 17 a bearing eye 41 each. In the recording area

00456 of the pawl tail 35 is the actuation

00457 cut 17 provided with a receiving shaft 42, the

00458 the movement requirements of the recorded therein

00459 pawl tail 35 is dimensioned accordingly. The

00460 lockable head of the pawl 13 is outside the

00461 outline of the actuating section 17 or of it

00462 provided guide pocket and is recognizable at the end

00463 widened. 00464

00465 As can be seen in the drawings, not only the

00466 actuating section 17 by the arm 25 of the spreading

00467 of the 26 in the direction of a basic position,

00468 but also the nested body of the

00469 pawl tail 35.00470

00471 The flattened front ends of the release pin 40

00472 lead to the inside of the window 20 of the

00473 penetrated arm 5. The bearing eye for the

00474 journal 19 is designated 43. This bearing eye

00475 43 of the actuating section 17 lies congruently

00476 aligns a bore 44 in the grip section 8 of the

00477 gripped pliers arm 5 opposite. 00478

00479 longitudinal slot 34 and angular slot 37 allow

00480 that pawl 13 and operating section 17

00481 the first actuation in the clamping position against each other

00482 swivel and move. The pivoting happens

00483 overriding. This actuation causes the distance

00484 between tooth engagement point 39 of pawl 13 and

00485 toothing 12 and the bearing axis 19 by a first actuation

00486 actuation section 17 shortened in this way

00487 is that the two clamping sections 7, 9 from the clamping

00488 position (see FIGS. 12 and 15) in a fan position

00489 lung (see FIGS. 13 and 17) can be disengaged. there 00490, as can be seen in FIG. 17, the tooth engagement between

00491 see the toothing 12 of the dental arch 11 and the

00492 counter toothing 14 of the pawl 13 received. The

00493 disengagement taking place shortened by the

00494 the second slot section 37 '' given clearance

00495 the support length between the forceps engagement point 39 and the

00496 said bearing pin 19. In the area of trade G

00497 there is a limited opening movement, which

00498 the jaws 28 lifts from a gripped object 45

00499 (see Fig. 13). The whole is accordingly achieved through

00500 the slot-like control of the ratchet

00501 unit, that is to say via the actuating section 17

00502 neten, in the angular slot 37 of the pawl

00503 13 engaging release pin 40. The is located in

00504 the position assigned to the clamping position in the

00505 essentially transverse to the connecting line x-x of tooth

00506 handle point 39 and trunnion 19 extending first

00507 slot portion 37 'in locking engagement, supported

00508 through the flank F, and in the ventilation position

00509 assigned position in the substantially parallel

00510 to the connecting line x-x extending second slot section

00511 cut 37 ''. This goes beyond that shown in FIG. 16

00512 intermediate position in which the flank support of the

00513 slot section 37 'comes to an end. The release pin

00514 40 wanders over the crown zone into the other

00515 second slot section 37 '' or the pawl

00516 tail 35 overflows this. This shift

00517 is free of rotation with respect to the actuating

00518 section 17 due to the directional course of

00519 slot section 37 "and longitudinal slot 36. The slot

00520 longitudinal axes can even be aligned coaxially. In

00521 this binding position is now functional

00522 one-piece pawl 13/17 in the sense of the other

00523 actuation usable, i.e. it becomes the second operation

00524 of the actuating section 17 initiated, the 00525 locking tooth engagement 12/14 is canceled.

00526 The tool can be in the maximum spread position according to

00527 Fig. 18, forming a large pliers mouth 10 for

00528 Capture object 45. 00529

00530 As can be seen in FIG. 17, the tooth insertion is limited

00531 reached there on the top end tooth and if necessary

00532 Partial intervention of the next tooth. This position

00533 is easy to release; because it is sat-

00534 interlocking teeth multiple hooking

00535 according to sawtooth-like structure. The restrictive

00536 flanks of the teeth and tooth gaps provide before

00537 Always unlock a short, tighter tension first. 00538 The lower end tooth of FIG. 17 can be seen

00539 counter toothing 14 of the pawl and a large part of the

00540 next teeth already out of engagement with the

00541 toothing 12. 00542

00543 All disclosed features of this application are invented

00544 essential for the application. In the disclosure of the application will

00545 hereby also the disclosure content of the associated /

00546 priority documents (copy of the pre-registration

00547 düng) fully included, also for the purpose

00548 features of these documents in claims of the present

00549 Registration to record.

Claims

00550 ANSPRÜ CHE 0055100552 1. Clamping or expanding pliers with two pliers arms connected in the manner of a 00553 scissor joint 00554 (4.5), the one-sided grip sections (6.8) and the other-00555 dig when the handle is actuated, clamping 00556 sections ( 7,9), whereby the two pliers arms 00557 (4,5) can be locked in different positions of the clamping section-00558 te (7,9) in clamping positions, marked-00559 characterized by a 00560 dental arch strip (11) assigned to a pliers arm (4), a 00562 pawl (13) associated with the 00561 handle section of the other tong arm (5) engages in the toothing (12) thereof. 0056300564 2. Clamping or expanding pliers according to claim 1 or in particular 00565 thereafter, characterized in that the tooth bracket 00566 gene strip (11) consists of a harder plastic material 00567 than the pliers arms (4, 5). 0056800569 3. Clamping or expanding pliers according to one or more of the 00570 preceding claims or in particular according to them, 00571 characterized in that the pliers arch strip (11) 00572 is inserted in a recess (15) of a pliers arm (4). 0057300574 4. Clamping or spreading pliers according to one or more of the 00575 preceding claims or in particular according to them, 00576 characterized in that the pliers arch bar 00577 (11) is pinned to and supported on the 00578 pliers arm (4) by means of the scissor-joint pin (2). 0057900580 5. Clamping or spreading pliers according to one or more of the 00581 preceding claims or in particular according to them, 00582 characterized in that the clamping sections (7, 9) 00583 of the tong arms (4, 5) carry tiltable clamping jaws 00584 (28) at the end. 00585 6. Clamping or expanding pliers according to one or more of the 00586 preceding claims or in particular according thereto, 00587 characterized in that the one pliers arm (5) forms a 00588 opening (16) through which the other pliers 00589 arm (4) is inserted. 0059000591 7. Clamping or expanding pliers according to one or more of the 00592 preceding claims or in particular according to them, 00593 characterized in that the internal (through-00594 gripping) pliers arm (4) carries the dental arch (11). 0059500596 8. Clamping or expanding pliers according to one or more of the 00597 preceding claims or in particular according thereto, 00598 characterized in that the pawl (13) forms an actuating section 00600 (17) projecting into the handle section (8). 0060100602 9. Clamping or expanding pliers according to one or more of the 00603 preceding claims or in particular according thereto, 00604 characterized in that the actuating section 00605 (17) lies in a window (20) of the handle section (8) 00606. 0060700608 10. Clamping or expanding pliers according to one or more 00609 of the preceding claims or in particular according thereto, 00610 characterized in that the handle section (8) 00611 has a U-shaped cross section, in the hollow 00612 space (21) of which the pawl (13) rotatable. 0061300614 11. Clamping or expanding pliers according to one or more 00615 of the preceding claims or in particular according thereto, 00616 characterized in that the tong arms (4, 5) are spring-loaded in the opposite direction 00617 in the direction of clamping or spreading of the clamping jaws (28) 00618. 00619 00620 12. Clamping or expanding pliers according to one or more 00621 of the preceding claims or in particular according to them, 00622 characterized in that the pliers clamping force is greater than 00623 than the force required to release the pawl (13). 0062500626 13. Clamping or expanding pliers according to one or more 00627 of the preceding claims or in particular according thereto, 00628 characterized in that the pawl (13) is acted upon by an arm (25) of the expanding spring (26). 0063000631 14. Clamping or expanding pliers according to one or more 00632 of the preceding claims or. in particular afterwards, 00633, characterized in that an arm (25) of the spreading-00634 or (26) plunges through a slot (30) of the dental arch strip 00635 (11). 0063600637 15. Clamping or expanding pliers according to one or more 00638 of the preceding claims or in particular according thereto, 00639 characterized in that the expanding spring (26) is a 00640 torsion spring, the winding (29) of which is tied by the 00641 scissor-joint pin (2). 0064200643 16. Clamping or expanding pliers according to one or more 00644 of the preceding claims or in particular according thereto, 00645 characterized in that the ends of the clamping section 00646 (7.9) form bearing eyes (31) into which bearing axles 00647 sen (32) protrude from a bearing pocket of the clamping jaw (28). 0064800649 17. Clamping or expanding pliers according to one or more 00650 of the preceding claims or in particular according to it, 00651 characterized in that the clamping force is maintained by 00653 by a 00652 elastic deformation of the clamping sections (7.9). 00654 00655 18. Clamping or expanding pliers according to one or more 00656 of the preceding claims or in particular according thereto, 00657 characterized in that the pawl (13) and00658 of the actuating section (17) are formed in two parts 00659.0066000661 19. Clamping or expanding pliers according to one or more 00662 of the preceding claims or in particular according to it, 00663 characterized in that the distance between tooth-00664 engagement point (39) between the pawl (13) and toothing 00665 (12) and bearing journal (19) for the rotatable mounting of the 00666 actuating section (17) by first actuation 00667 of the actuating section (17) is shortened in such a way 00668 that the two clamping sections (7, 9) are disengaged from the clamping position 00669 into a ventilation position, whereby 00670 the tooth engagement (12/14) is retained, which occurs when 00671 the actuating section (17) 00672 is actuated a second time 0067300674 20. Clamping or expanding pliers after one or Several00675 of the preceding claims or in particular according to it, 00676 characterized in that the pawl (13) and actuating section (17) pivot and shift when first actuated against one another 00678 0067900680 21. Clamping or expanding pliers according to one or more 00681 of the previous one Claims or in particular according thereto, 00682 characterized in that the displacement according to 00683 of a longitudinal slide (36) of the pawl (13) penetrated by the bearing pin (19) is made possible. 0068500686 22. Clamping or expanding pliers according to one or more 00687 of the preceding claims or especially thereafter, 00688 characterized by a release pin (40), which is assigned to the actuating section 00689 (17) and which engages in an angular slot (37) 00690 of the pawl (13), 00691 which, in the position 00692 assigned to the clamping position, in a position essentially transverse to the connecting line 00693 (xx ) from meshing point (39) u nd bearing journal (19) 00694 engages first slot section (37 ') 00695 and which release pin (40) in the position assigned to the ventilation position 00696 lung in a substantially 00697 second slot section (37 "') running parallel to the connecting line (xx) entry. 0069900700 23. Clamping or expanding pliers according to one or more 00701 of the preceding claims or in particular according thereto, 00702 characterized in that the second slot section 00703 (371 ') extends in the same direction as the longitudinal slot (36). 0070400705 24. Clamping or expanding pliers according to one or more 00706 of the preceding claims or in particular according thereto, 00707 characterized in that the pawl (13) and the actuating section (17) are acted upon by the same arm (25) of the spreading device 00709 or (26) become. CHANGED CLAIMS [received at the International Bureau on May 29, 2000 (May 29, 2000); original claims 1-24 replaced by new claims 1-23 (5 pages)]

1.Clamping or expanding pliers with two pliers arms (4, 5) connected to one another in the manner of a scissor joint, which form grip sections (6, 8) at one end and clamping sections (7, 9) that can be moved towards one another when the handle is actuated, the two pliers arms ( 4, 5) in different spacing positions of the clamping sections (7, 9) can be locked in clamping positions such that a pawl (13) assigned to the handle section of the other pliers arm (5) is assigned to a toothing (12) of a dental arch strip (11) assigned to a pliers arm (4) ) engages, characterized in that the segment-shaped dental arch strip (11), which is pinned to the pliers arm (4) by means of the scissor-type pivot pin (2), lies in a recess (15) close to the trade with a contour supporting the dental arch strip (11).

2. Clamping or expanding pliers with two pliers arms (4, 5) connected to each other in the manner of a scissor joint, the one-end grip sections (6, 8) and the other end when the handle is actuated against the force of a spreading spring

(26) to form mutually movable clamping sections (7, 9), the two tong arms (4, 5) can be locked in different positions of the clamping sections (7, 9) in the clamping positions by the fact that in a toothing (12) of a tong arm ( 4) assigned toothed arch bar (11) engages a pawl (13) assigned to the handle section of the other pliers arm (5), characterized in that the pawl (13) lying in a window (20) of the handle section (8) is supported by an arm of the spreading spring ( 26) is applied.

3. Clamping or expanding pliers according to claim 1 or 2, characterized in that the dental arch strip (11) consists of a harder plastic than the pliers arms (4, 5).

4. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the pliers arch strip (11) is pinned to and supported on the pliers arm (4) by means of the scissor-joint pin (2).

5. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the clamping sections (7, 9) of the pliers arms (4, 5) carry clamping jaws (28) which can be tilted at the end.

6. Clamping or spreading pliers according to one or more of the preceding claims, characterized in that the pliers arm (5) forms an opening (16) through which the other pliers arm (4) is inserted.

7. Clamping or expanding pliers according to claim 6, characterized in that the inner (penetrating) pliers arm (4) carries the dental arch (11).

8. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the pawl (13) forms an actuating section (17) projecting into the handle section (8).

9. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the actuating section (17) lies in a window (20) of the handle section (8).

10. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the handle portion (8) has a U-shaped cross section, in the cavity (21) of which the pawl (13) lies rotatably.

11. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the tong arms (4,5) are spring-loaded against the clamping or expanding direction of the clamping jaws (28).

12. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the pliers clamping force is greater than the force required to release the pawl (13).

13. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that an arm (25) of the expanding spring (26) through a slot (30) of the dental arch (11) dips.

14. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the spreading spring (26) is a torsion spring, the winding (29) of which is tied up by the scissor-joint pin (2).

15. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the ends of the clamping sections (7, 9) form bearing eyes (31) into which bearing axes (32) of a bearing pocket of the clamping jaw (28) protrude.

16. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that that the clamping force is maintained by an elastic deformation of the clamping sections (7.9).

17. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the pawl (13) and the actuating section (17) are formed in two parts.

18. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the distance between the tooth engagement point (39) of the pawl (13) and toothing (12) and bearing pin (19) for the rotatable mounting of the actuating section (17) by a First actuation of the actuating section (17) is shortened in such a way that the two clamping sections (7, 9) are disengaged from the clamping position into a ventilation position, the tooth engagement (12/14) being retained, which is canceled when the actuating section (17) is actuated a second time .

19. Clamping or spreading pliers according to claim 18, characterized in that the pawl (13) and the actuating section (17) pivot against one another and shift during the first actuation.

20. Clamping or expanding pliers according to claim 19, characterized in that the displacement according to a through the bearing pin (19) penetrated longitudinal slot (36) of the pawl (13) is made possible.

21. Clamping or expanding pliers according to one or more of the preceding claims, characterized by one of the actuating section (17), in an angular slot (37) of the pawl (13) engaging disengagement pin (40), which engages in the position assigned to the clamping position in a substantially transverse to the connecting line (xx) of tooth engagement point (39) and bearing pin (19) first slot section (37 ') and which disengagement pin (40) in the Position assigned to the ventilation position enters a second slot section (37 '') which runs essentially parallel to the connecting line (xx).

22. Clamping or expanding pliers according to claim 21, characterized in that the second slot section (37 '') extends in the same direction as the longitudinal slot (36).

23. Clamping or expanding pliers according to one or more of the preceding claims, characterized in that the pawl (13) and the actuating section (17) are acted upon by the same arm (25) of the expanding spring (26).